If you want matrial to quote at people check out: Wikipedia - Biphobia (http://en.wikipedia.org/wiki/Biphobia)
Particulaly the paragraph:
"A 2005 study claimed that a sample of men self-identifying as bisexual did not respond equally to gay pornographic material involving only men, and only women, but instead showed four times more arousal to one than the other. However, bisexuality does not imply equal attraction towards both genders. In addition, opponents claim that genital arousal to homosexual pornographic material is not a good indicator of orientation. They also point out that the study showed a third of men had no arousal, and ask why this doesn't mean that one third of men are really asexual. LGBT advocates subsequently attacked the study and the New York Times article which reported it as flawed and biphobic."
no subject
Particulaly the paragraph:
"A 2005 study claimed that a sample of men self-identifying as bisexual did not respond equally to gay pornographic material involving only men, and only women, but instead showed four times more arousal to one than the other. However, bisexuality does not imply equal attraction towards both genders. In addition, opponents claim that genital arousal to homosexual pornographic material is not a good indicator of orientation. They also point out that the study showed a third of men had no arousal, and ask why this doesn't mean that one third of men are really asexual. LGBT advocates subsequently attacked the study and the New York Times article which reported it as flawed and biphobic."